diff --git a/source/hassio/addon_config.markdown b/source/hassio/addon_config.markdown
index 382bf4be477..1708ea193bf 100644
--- a/source/hassio/addon_config.markdown
+++ b/source/hassio/addon_config.markdown
@@ -96,7 +96,7 @@ The config for an add-on is stored in `config.json`.
 | map | no | List of maps for additional hass.io folders. Possible values: `config`, `ssl`, `addons`, `backup`, `share`. Default it map it `ro`, you can change that if you add a ":rw" at the end of name.
 | environment | no | A dict of environment variable to run add-on.
 | options | yes | Default options value of the add-on
-| schema | yes | Schema for options value of the add-on
+| schema | yes | Schema for options value of the add-on. It can be `False` to disable schema validation and use custom options.
 | image | no | For use dockerhub.
 | tmpfs | no | Mount a tmpfs file system in `/tmpfs`. Valide format for this option is : `size=XXXu,uid=N,rw`. Size is mandatory, valid units (`u`) are `k`, `m` and `g` and `XXX` has to be replaced by a number. `uid=N` (with `N` the uid number) and `rw` are optional.